gem5 VS CHRONO

Compare gem5 vs CHRONO and see what are their differences.

gem5

The official repository for the gem5 computer-system architecture simulator. (by gem5)
Architecture Arm Modeling open-source risc-v Simulation Simulator X86
Source Code
gem5.org
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CHRONO

High-performance C++ library for multiphysics and multibody dynamics simulations (by projectchrono)
Physics Simulation physics-simulation Modeling Robotics Physics Engine multibody-dynamics granular-dynamics flexible-body fluid-solid-interaction vehicle-dynamics
Source Code
projectchrono.org
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gem5 CHRONO
3 7
1,433 2,055
4.5% 2.3%
9.8 9.9
about 16 hours ago 7 days ago
C++ C++
BSD 3-clause "New" or "Revised" License BSD 3-clause "New" or "Revised" License
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

gem5

Posts with mentions or reviews of gem5. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-06-13.
  • Hot Chips 2023: Arm’s Neoverse V2
    1 project | news.ycombinator.com | 12 Sep 2023
    The idea is to write a C++ model that that produces cycle accurate outputs of the branch predictor, core pipeline, queues, memory latency, cache hierarchy, prefetch behaviour, etc. Transistor level accuracy isn't needed as long as the resulting cycle timings are identical or near identical. The improvement in workload runtime compared to a Verilog simulation is precisely because they aren't trying to model every transistor, but just the important parameters which effect performance.

    Let's take a simple example: Instead of modeling a 64-bit adder in all its gory transistor level detail, you can just have the model return the correct data after 1 "cycle" or whatever your ALU latency is. As long as that cycle latency is the same as the real hardware, you'll get an accurate performance number.

    What's particularly useful about these models is they enable much easier and faster state space exploration to see how a circuit would perform, well before going ahead with the Verilog implementation, which relatively speaking can take circuit designers ages. "How much faster would my CPU be if it had a 20% larger register file" can be answered in a day or two before getting a circuit designer to go try and implement such a thing.

    If you want an open source example, take a look at the gem5 project (https://www.gem5.org). It's not quite as sophisticated as the proprietary models used in industry, but it's a used widely in academia and open source hardware design and is a great place to start.

  • Custom Instructions: How do I go from MATCH/MASK to opcode?
    2 projects | /r/RISCV | 13 Jun 2023

CHRONO

Posts with mentions or reviews of CHRONO. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-06-16.

What are some alternatives?

When comparing gem5 and CHRONO you can also consider the following projects:

renode - Renode - Antmicro's open source simulation and virtual development framework for complex embedded systems

Bullet - Bullet Physics SDK: real-time collision detection and multi-physics simulation for VR, games, visual effects, robotics, machine learning etc.

riscv-none-elf-gcc-xpack - A binary xPack with the GNU RISC-V Embedded GCC toolchain with support of WCH RISCV CH56x... "WCH-Interrupt-fast"

PhysX - NVIDIA PhysX SDK

l4re-core - The core components of the L4Re operating system.

Simbody - High-performance C++ multibody dynamics/physics library for simulating articulated biomechanical and mechanical systems like vehicles, robots, and the human skeleton.

cs2410 - An out-of-order execution CPU simulator for CS2410 Computer Architecture course final project at the University of Pittsburgh.

ODE

riscv-perf-model - Example RISC-V Out-of-Order/Superscalar Processor Performance Core and MSS Model

Box2D - Box2D is a 2D physics engine for games

mujoco - Multi-Joint dynamics with Contact. A general purpose physics simulator.

Chipmunk - A fast and lightweight 2D game physics library.

gem5 vs renode CHRONO vs Bullet gem5 vs riscv-none-elf-gcc-xpack CHRONO vs PhysX gem5 vs l4re-core CHRONO vs Simbody gem5 vs cs2410 CHRONO vs ODE gem5 vs riscv-perf-model CHRONO vs Box2D CHRONO vs mujoco CHRONO vs Chipmunk